Use Weather.gov to acquire the relevant weather information to input. Just input your zip code! The projected inches of snow is total accumulation on said day. The winter storm warning should be specified on weather.gov Blizzard-like conditions includes any risk of high speed gusts on said day. School location should be easy to figure out. There are three choices: Urban, suburban, and rural.
I wanted to make an improved version of snowdaycalculator.com Dedicated to the great CYO basketball team that rarely ran the the only play we implemented (you know who you are). One last thing: Remember the chain rule.